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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 7 |
| 7 | 8 |
| 8 | 9 |
| 9 | 11 |
| 10 | 12 |
| 11 | 15 |
| 12 | 17 |
| 13 | 20 |
| 14 | 21 |
| 15 | 23 |
| 16 | 29 |
| 17 | 36 |
| 18 | 39 |
| 19 | 41 |
| 20 | 44 |
| 21 | 84 |
[1,2,3,4,5,7,8,9,11,12,15,17,20,21,23,29,36,39,41, 44,84] |